Abstract
Abstract. Digital implementation of power and bandwidth efficient quadrature carrier modulation techniques are identified, evaluated and compared with computer simulation results. The modulation techniques include QPSK, OQPSK, MSK, π/4-QPSK and Q 2 PSK. Digital algorithms for data-decision, carrier phase offset and timing delay estimation for each of the modems are given. Results in terms of BER performances, statistical properties of the synchronization procedures are shown for AWGN channels. Computational loads of the different modem systems evaluated are also given.
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